Jaguar XJ X350

XJ in brief

The XJ has always been Jaguar’s flagship model—a large, low, and elegant saloon that competes with the Mercedes-Benz S-Class, BMW 7 Series, and Audi A8. Both of the latest generations feature a lightweight aluminium body and air suspension, with some models built with a long wheelbase (XJ L).

The XJ is praised for its distinctive design, smooth ride, and rarity—it’s far less common than its German rivals. Its value drops quickly in the used market, so you can pick up a luxury car relatively cheaply, but repairs and maintenance remain expensive.

X350 vs X351—what’s the difference

The X350 generation (2003–2009, refreshed in 2007) retained the classic XJ look with round headlights, but underneath lies a modern aluminium body. It’s a choice for traditional design lovers, but today it’s an old car where condition is more important than the trim.

The X351 generation (2009–2019) is a completely new, modern design with a coupe-like silhouette and a more contemporary interior. It’s the most popular XJ generation in the used market. From 2013, cars got an 8-speed automatic gearbox, and the 2015 refreshed models came with LED headlights and a newer infotainment system.

Engines and gearboxes

The X350 is most commonly found with a 2.7 V6 diesel (around 200 HP), as well as petrol 3.0 V6 and 3.5–4.2 V8 engines. The sporty XJR featured a 4.2 V8 with a supercharger (around 400 HP).

The X351 is most popular with a 3.0 V6 diesel (around 275–300 HP). Petrol options include a 3.0 V6 with a supercharger (around 340 HP) and a 5.0 V8, either naturally aspirated or with a supercharger (around 470–575 HP in the most powerful XJR versions). Some markets also had all-wheel-drive versions.

All versions come with an automatic transmission: X350 and early X351 models have a 6-speed, while later X351 models have an 8-speed. Most cars are rear-wheel drive.

What to check when buying a used XJ

Air suspension is a common issue in both generations: the car shouldn't sag on one corner after standing, and there shouldn't be any suspension faults in the instrument cluster. Check all the electronics too — windows, seat adjustments, multimedia, and sensors.

For diesel cars, check the diesel particulate filter (DPF), turbo, and engine noise when cold. In V8 engines, ask about the condition of the timing chain and its tensioners — noise when starting cold is a warning sign.

Repairing an aluminium body is expensive and requires specialist equipment, so check for repainted or unevenly fitted parts. Verify the service history and, before buying, it's worth getting a Jaguar specialist to inspect the car.

Trim levels

Names and equipment vary by market and year; we list the most commonly found trims in Europe.

Comparison of X351 generation trims

For most buyers, the best choice is the refreshed (2015–2019) X351 Premium Luxury or Portfolio with the 3.0 V6 diesel. The XJR is worth considering only if you're after a truly powerful car and are prepared for high running costs.

Frequently asked questions